Woah! How did that work out?
How different are MPPK, Hartage, Hartage+MPPK ?

Well, MPPK is MPPK. Good lower torque but is miss power on top.

Hartge is 25Nm & 33Hp above MPPK values at my first Dyno. Pretty noticable.
I have mounted another aircooler, (Wagner Comp.) + the Akrapovic exhaust recently. Await an upportunity for one more dyno run..

Hartge + MPPK is Like Hartge ref. above. The two things aren't there at the same time as Hartge's settings rules, but the enhanged speeder response, burbles etc. is intact as with the MPPK,- AND that's supercool . (JB doesn't do that, but gives you possibilyties such as meth.. ie more power)

I picked Hartge because 1. First choice was manipulating the BMW ECU, and that is onle possible on the first few F30's, and still is. 2. AC Schnitzer and Manhardt Racing said their kit didn't get along with the MPPK.
JB has less supervision than Hartge.

I'm checking whether a modyfied t/c will work with Hartge as well.

(Changing your springs/dampers to i.e. HR / Bilstein will give you faster acceleration from zero too and keep you on track at 250km/hour as well).